.with-side .side {left: 20px;position: absolute;transition: all 0.3s ease 0s;width: 140px;}
.with-side .main {margin-left: 160px;margin-right: 0;transition: all 0.3s ease 0s;}
.with-side .side .menu.affix {margin-left: 0;top: 100px;}
